Firearm attachment



B. L. JENKS, J- L. CAMERON ANDJL. E. Y-AGGI.

FIREARM ATTACHMENT. APPLICATION FILED AUG-20, 1917.

Patented Mann, 1921.;

' JN ENTD. 252/0,

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FIREARM AT'rAcH ENn To all whom it may concern:

Be it known that we, BENJAMIN L. JENKS, JAMES L.'- CAMERON, and VLAWRENGE E. YAeer,'citizens of the United States, residing at Cleveland, in the county-of Cuyahoga and State of Ohio,have invented a certain new and useful Improvement in- Firearm Attachments, of Whicht-he following is a full, clear, and exact description.

' Thepresent invention relates particularly to an attachment in the form of a frameor shoulder rest or brace designed tobeat tached to a gun, such' asa military rifle, and provided with auxiliary bolt throwing and-trigger operating devices 1 which are located below the gun proper so that they can be operated by the operator located below thegun and wholly concealed andprotected by a trenchor the like. Our invention is adapted to be used in connection with various kinds of fire arms, and has'particular utility in connection with a so-called sitascope, constituting the subj ect matter of applications, Serial No.-66,200,'filed December 10,1915, and Serial No. 37 ,625, filed July 1st, 1915, in the names of Lawrence'E,

Yaggi and James L. CameronQt ootthe joint applicants herein.

Onefofhe objects-of the present -inven-. tion is'to providean attachment which can I be applied to a'gun, such as a military rifle, and including a shoulder, rest with portions 'to be engaged by the shoulder and hand of the operator so that the gun is held or supported firmly upon the shoulder, in'such a manner as to leavethe hands free of strain or load, and which is so constructed that when the gun is fired, the recoil will not cause any material-shock to the operator;

Additionally the inventionaimsto provide V V claw engaging theball on the bolt lever of onthe attachment, ;devices 'for operating 7 the trigger and bolt-ofthe gun, these devicesbeing so mounted that they have the same or similar movement'sjas the gun trigger and gun bolt respectively, so that the gun-can be fired 'by the 'o-peratorfifrom a relativelylowered position',,with the same hand movements'that are required; when the gunis' operated in the ordinary manner. l

The above and numerous additional objects arev accomplished by our invention which" may be briefly summarized as con 'sistlng 1n certain novel detalls of construction and combinations and arrangementso-f Specification of Letters Patent. i Patented Mar l-5 application filed August 20, 1917i Serial No. 187,223.

parts which-willbedescribed in the specification and set forth in the 'appended'claims. These results are obtained in connect-ion with the use of the'said' sitascope', by attachingjto the butt and stock of the firearmja combination sub stock-and shoulderbrace',

having a lowered, auxiliary bolt-throwing device and an extension trigger, illustrated in the accompanying drawing, in which-.-

Figure '1 is a side elevationof a: military rifietoiwhich is attached our subgst ock and shoulderbrace, showing the lowered 'b'olt throwing device and the extension trigger.

Fig. 2 is a rear end elevation of the butt of the" gun I with our sub-stock and shoulderbrace' attached thereto and the attachment for throwing'the' bolt and-ejecting the shells and replacing empty shells with loaded it shells from-the magazine of the gun. V V Fig; 8' is a cross-section of the stock of the gun, showing in elevation the holding device clamp, around the stock of, the gun and the attachment for throwing the bolt '7 and ejecting the shells and introducing loaded shells from the magazine of the gun;

Fig. 4 is'a side elevation,'-of "the-boltthrowing device.-

Fig. 5 is "an end elevation of the Belt throwing device, shown as in Fig. 2.

' Fig. 6 isanend elevation of the lowered bolt throwing device, as seen from the muzjzle endof the gun.

used in attaching the sub-bolt to the main bolt of the gun, bymeans of two connecting rods;

joints'hown in Fig. 7 I r t Fig. 9 is'a detailed side elevation ofgthe Fig.7 is a side elevation of'a clevis'j'oint Fig. 8 is "an end 'elevationgiof the the gun, and being attachedtotheupper 7 end of'the two connectingfrods as shown in Fig; 1.

---'Fig. lO'shows a detailed side elev ation of in r the terminal of the" triggerpulling device spool in connection with the trigger;- f-

Similar letters refer to" similar-'i parts,

throu hout. the several views,

In igs. 1,2and 3, w; 1

(a) is a rifle or other small arm.

; (b) is the frame of the sub-stock and shoulder-brace, having a shoe I (a) rigidly attached to the frame (6) and being quickly attachable to and detachable from the gun (a) by the adjustable clamp (d). i The shoe is reinforced and strengthened by the metal pieces, (6) which always maintain a uniform, rigid connection between the gun'(a) and the frame (12).

(f) is a clamp aroundthe stock of the gun (a) rigidly attaching and holding the 7 frame (6) to the gun (a) but being'quickly and has two arms (Z) and (Z), which are attached by means of clevis-joints (m) and (m) to the two connecting rods and (n) the upper ends-of which rods terminate in adjustable concave claws (0) and (0') which are quickly attachable toand detachable from the ball on the arm' (a) of the 'gun bolt. The two hemispherical claws (0) and (0) are madeto engage the ball by means of the bolt and the wing nut (p). The arm (Z) of the sub-bolt terminates in a ball (Z) forming a handle (g) is-the extension trigger which operates. the trigger on the gun (a) by'means of rocking leversand connecting rods as shown in Fig. 1, and engaging the trigger (a") of the gun (a) by means of the re volving spool (r). The sub-trigger (g) is protected by the guard (s) The frame (6) is formed as shown at: (25), so as to support and hold the gun (a) comfortably on the shoulder of the operator in a concealed and protected position. The frame (b)'may be padded, where it comes in contact with the shoulder of the operator as at (u). V ('v) is a handle grip on the frame (7)) below the trigger-guard (s).

(b) is an extension of thebrace and substock for the. purpose of keeping the sitascope and sub-magazine from being damaged by hitting the bank of the trench, and also to form a handle for more easily holding and guiding the gun. a

(S) 'is an independent reflecting or refracting sighting device, T called a sitascope. The sub-bolt operates substantially parallel to the bolt of the gun (a) and in a similar manner.

It will' be observed that the sub-bolt i has the same movements as the bolt of the gun, and that the operator will revolveand move the sub-bolt axially by manipulating the be above his; shoulder.

lever or handle Z, giving this'handle precisely thesame movements as the operator would give to the bolt operating lever a if the gun were used-inthe ordinary manner without the attachment. Likewise the same movement is given to the extension trigger as the'operator would give to the trigger of the gun if used without the attachment.

- These features are of considerable importance, as it enables the operator to manipulate a gun with this attachment applied, as

easily as he would operatethe gun without the attachment, and practically .no time is required to enable the operator to secure excellent resultswhen' operating the gun through the attachment from a position be;

lowthegun. i a

The provision ofthe'shoulder brace as shown, and the forward hand grasping portion or hand grip 4) enables the operator to hold the gun steady and firmly while operating or firing, with the hand engaging the grip 'v practically freeoffstrain or 'load, since the'shoulder rest is so constructed as to engage the part and to extend over the shoulder sothat'the latter will sustain the load, and the whole device is so constructed that the recoil. following firing does not cause any shock to the operator, therecoil being absorbed by a. backward rotation of the. gun rather than by a direct thrust on the body of the operator, r y a A further advantage, and onewhich will be apparentfrom the drawings, is the fact that the device cantbe attached to: thegun easily and effectively, and without requiring any special gun construction, or ofaltering its construction. 7

We claim r I p 1. attachment for a gun having means for attachment to: the butt of the gun stock, and comprising a lower rear shoulder engaging portion. and 'a forward hand grip, the shoulder engaging portion being beneath and forward of said attaching means so that when attached to'a gun and applied to the shoulder of the operator the gun stock will 2.' An attachment for a gun comprising a shoulder rest havingpartsj adapted. to be at tached to the gun at twopoints, one forward of the; other,iand having a shoulder engaging part with a portionofsaidlastmentioned part shaped to engage the front of the shoulder of the operator, and another portion'shaped to simultaneously engagethe topof the shoulder, the shoulder engaging part beingjbeneath and forward of the rear point of-a ttachment to'thegun. f a 1 An'attachment'for a gun comprising a frame having means for attachment tothe butt'of the gun stock, and at a point-forward of the butt, and said frame having a lower portion adapted to rest upon andengage the shoulder of the operator, said lower portion being beneath and forward of the means for attachment to the butt of the gun stock.

4:. A gun attachment comprising a frame having means for attachment to a gun stock at the butt thereof and forwardly of the butt, and said frame having beneath and between the two points to be attached to the gun, a lower portion adapted'torest upon and engage the shoulder of the operator, and another portion forward of the shoulder engaging portion and adapted to be grasped by the hand of the operator.

5. A gun attachment comprising a frame having at the rear, means for forming a detachable connection with the butt of a gun stock, and having means for forming clamping engagement with the stock forward of the butt, and said frame'having beneath and forward of the means for forming connection with the butt of the stock alower rear shoulder engaging portion and a forward hand grip whereby the attachment may be firmly held against'the shoulder of the operator.

6. An attachment for a gun comprising aframe having forward and rear portions adapted tobe attached to the gun,'and one constituting a, shoulder engaging member, a

and mounted thereon for rotary and endwise movement.

BENJAMIN L. JENKs; JAMES L. CAMERON. LAWRENCE E. YAe-ei.

Witnesses:

H. G. VAN SWERINGEN, D.'S. BARRE'rmJr. 

